WO2012079195A1

WO2012079195A1 - Circular saw blade with demountable saw edges

Info

Publication number: WO2012079195A1
Application number: PCT/CN2010/002047
Authority: WO
Inventors: 陈重光
Original assignee: 新杰亚洲有限公司
Priority date: 2010-12-15
Filing date: 2010-12-15
Publication date: 2012-06-21

Abstract

A circular saw blade(1,2) for a cutting saw has demountable saw edges. The circular saw blade(1,2) includes a saw blade disc(10), at least two pieces of arched saw edges(20) and many screws(30). The outer edge of the circular saw blade(1,2) locates many notches(11), and a groove(12) which extends along a whole cycle of the saw blade disc(10). The wall(13,14) surfaces of the groove(12) have many screw holes(131). The outside of the arched saw edges(20) are provided with saw teeth(21) and all of the arched saw edges(20) can joint to form a complete ring. The inside of the arched saw edges(20) have at least one convex body(23) which can match with the notch(11) one to one. A whole cycle of convex plates(24) which extends along the inner margin of the arched saw edges(20) can engage with the groove(12) of the saw blade disc(10). The wall surfaces of the convex plates have a lot of perforates(241). The screws(30) can be screwed into the screw holes(131) of the saw disc by passing through the perforates(241) of the convex plates(24), so that all arched saw edges(20) can fasten at the periphery of the saw blade disc to make a complete circular saw blade(1,2).

Description

Circular saw blade with replaceable saw blade

The present invention relates to a circular saw blade structure that extends the life of a circular saw blade by replacing the saw blade to reduce consumables and reduce cost. Background technique

The circular saw blade is provided with a plurality of serrations which are protruded along the edge of the saw blade body and are arranged at equal angular intervals, and the saw blade is fixed with a saw blade. By sawing the object by the saw blade, the work of sawing the slit can be completed. After the circular saw blade is used for a period of time, the saw blade must be damaged first. When the saw blade is damaged, the saw blade cannot be used and must be discarded.

The aforementioned saw blade includes an integrally formed saw blade body and respective serrations welded to the saw blade body. The body of the saw blade occupies a substantial portion of the entire saw blade, and each serration is located only in a small portion of the periphery of the saw blade. When a small portion of the serrations are damaged, the user may reluctantly continue to use it in order to reduce the expenditure, which may easily cause the sawing effect to be poor and the sawing line to be offset. Whenever the low-cost saw blade wears out, the intact saw blade body must be discarded together, resulting in waste of resources, which is also a pain that the user can't relieve. Invention disclosure

SUMMARY OF THE INVENTION A primary object of the present invention is to provide a circular saw blade for a replaceable saw blade that extends the life of the circular saw blade by replacing the saw blade to reduce consumables and reduce cost.

A second object of the present invention is to provide a circular saw blade for a replaceable saw blade for use on a circular saw blade having a two-way saw blade, which can be separately sawed by means of forward and reverse assembly. Cut the work and double the life of the saw blade.

In order to achieve the above object, the technical solution adopted by the present invention is: a circular saw blade for replacing a saw blade, which is a circular saw blade used for assembling on a saw device, characterized in that: the circular saw blade comprises: a saw blade body, at least two curved saw blades, and a plurality of screws; wherein

The saw blade body can be fixed to the electric saw device and driven to rotate by the electric saw device; the saw blade body has a circular plate shape, and a peripheral edge thereof is provided with a plurality of notches; the circumferential surface of the saw blade body is provided with a circle along the circumference An extending groove; the wall surface of the groove is provided with a plurality of screw holes;

The outer circumference of each of the curved saw blades is provided with serrations, and each of the curved saw blades can be spliced together to form a complete The inner edge of the curved saw blade is provided with at least one convex portion, which can be abutted one-to-one with the notch of the saw blade body; the inner edge of the curved saw blade is provided with a ring extending along the inner edge a tab, the tab being engageable with a groove of the saw blade body; the wall surface of the tab is provided with a plurality of perforations; the screw can penetrate through the through hole of the tab and screw into the screw hole of the saw blade body Each curved saw blade is locked to the periphery of the saw blade body.

Wherein: the groove of the saw blade body is disposed on the circumferential end surface of the saw blade, and defines a groove having two side wall faces; the two side wall faces of the groove are respectively provided with a plurality of screw holes and a plurality of opposite holes perforation.

Wherein: the perforation aperture on a side wall surface of the groove of the saw blade body is a reamed hole; the reamed perforation can allow the conical head of the screw to sink.

Wherein: the curved saw blade is provided with protruding teeth arranged along the edge and arranged at equal angular intervals, and a sawing edge is fixed on each of the front and rear sides of each saw tooth.

Wherein: the end of the screw protrudes from the saw blade body by a length of 0.25 mm.

The circular saw blade of the replaceable saw blade provided by the invention can replace the curved saw blade to make the saw blade on the circular saw blade a new shape, and can provide the function of sawing the work piece. As a result, consumable costs can be reduced and consumers can be reduced. The structure of the invention is used on a circular saw blade with a two-way saw blade, and the life limit of the curved saw blade can be doubled, which is an ideal and practical design. BRIEF DESCRIPTION OF THE DRAWINGS

Figure 1 is an external view of an embodiment of the present invention;

Figure 2 is an exploded view of the embodiment of Figure 1;

Figure 3 is a partially enlarged cross-sectional view showing the embodiment of Figure 1;

4 is an external view of another embodiment of the present invention;

Figure 5 is an exploded view of the embodiment of Figure 4;

Figure 6 is a partially enlarged cross-sectional view showing the embodiment of Figure 4;

Figure 7 is a view showing a state of use of the embodiment shown in Figure 4 and another circular saw blade embodiment.

Description of the reference signs:

I-circular saw blade 10-saw blade body

I I-notch 12-groove

13-wall 131-threaded hole

14-wall 141-perforation 20-arc saw blade 21-sawtooth

22-saw blade 23-protrusion

24-tap 241-perforation

30-screw 2-circular saw blade

40-saw body 41-notch

42-groove 43-wall

431-screw hole 44-wall

441-perforated 50-arc saw blade

51-toothed 52-saw blade

53-protrusion 54-tab

541-perforation 55-saw blade

60-screw 3-circular saw blade

40, - saw blade body 50' - curved saw blade

52, - saw blade 60' - screw The best way to achieve the invention

The invention is directed to a one-way saw blade that is discarded when the saw blade is worn and is too wasteful, and provides a circular saw blade that can replace the saw blade, thereby doubling the service life of the overall saw blade. The construction and efficacy of the present invention will be described in detail by way of examples in conjunction with the drawings.

Please refer to FIG. 1 and FIG. 2 for an external view and an exploded view of the embodiment of the present invention. The circular saw blade 1 of the exchangeable saw blade disclosed in the present invention is a circular saw blade 1 assembled for use on a sawing device (not shown). The circular saw blade 1 comprises: a saw blade body 10 which can be fixed on the saw device and driven to rotate by the saw device, at least two curved saw blades 20 which can be spliced with the saw blade body, and a plurality of locking saws for locking A screw 30 between the sheet body 10 and the curved saw blade 20.

The blade body 10 has a circular sheet shape with a plurality of recesses 11 at its periphery. The circumferential surface of the saw blade body 10 is provided with a circumferential groove 12 extending circumferentially. Please refer to Figure 3. The groove 12 may be provided on the circumferential end surface of the blade body 10 and constitute a groove 12 having two side wall faces 13, 14. A side wall surface 13 of the groove 12 is provided with a plurality of screw holes 131, and the other side wall surface 14 is provided with a plurality of through holes 141 at positions corresponding to the respective screw holes 131.

The outer circumference of each of the curved saw blades 20 is provided with serrations 21, and each of the curved saw blades 20 can be spliced to each other. Become a complete ring. The serration 21 is provided with a saw blade 22. (cutting head) capable of sawing the workpiece. The inner edge of the curved saw blade 20 is provided with at least one convex portion 23 which can be fitted to the notch 11 of the saw blade body 10 in a one-to-one manner. The inner edge of the curved saw blade 20 is provided with a ring of tabs 24 extending along the inner edge, the tabs 24 being engageable with the grooves 12 of the blade body 10. A plurality of through holes 241 are formed in the tabs 24 of the tabs 24 corresponding to the saw blade body 10. The screw 30 can penetrate the through hole 141 of the saw blade body 10 and the through hole 241 of the tab 24 and lock into the screw hole 131 of the saw blade body 10 to lock the curved saw blade 20 to the saw blade body. The periphery of 10. The perforation 141 on a side wall surface 14 of the groove 12 of the saw blade body 10 has a hole diameter. The reamed perforation 141 can allow the tapered head of the screw 30 to sink.

The aforementioned curved saw blades 20 are respectively assembled in the saw blade body 10, and can be on the saw blade body.

10 is bounded into a complete ring. In the meantime, the convex portion 23 of the curved saw blade 20 is fitted into the notch 11 of the saw blade body 10, and the locking function provided by the screw 30 enables the curved saw blade 20 to be coupled with the saw blade body 10. At the same time, the saw blade 22 of the serration 21 of the curved saw blade 20 becomes the saw blade 22 of the circular saw blade 1. When the sawing device drives the saw blade body 10 to rotate, the saw blade body 10 and the curved saw blades 20 are integrally coupled to perform a sawing operation on the workpiece.

The structure of the replaceable saw blade provided by the present invention is applied to a circular saw blade 2 having a two-way saw blade, which is more effective in saving. Please refer to FIG. 4, FIG. 5 and FIG. 6 for an external view and an exploded view of another embodiment of the present invention. The circular saw blade 2 having a two-way saw blade includes: a saw blade body 40 that can be fixed to the saw device and driven to rotate by the saw device, at least two curved saw blades 50 that can be spliced with the saw blade body, and a plurality of The screw 60 between the saw blade body 40 and the curved saw blade 50 has been locked. The saw blade body 40 is provided with the same recess 41, the recessed groove 42, the two side walls 43, 44, the screw hole 431, the through hole 441 and the like as the saw blade body 10 shown in FIG. The curved saw blade 50 is provided with the same convex portion 53, the convex piece 54, the through hole 541, and the like as those of the curved saw blade 20 shown in Fig. 2. The screw 60 can lock the curved saw blade 50 and the saw blade body 40 together, and the curved saw blade 50 can be folded into a complete ring shape on the saw blade body 40.

The curved saw blade 50 is provided with serrations 51 which are protruded at the edges and are arranged at equal angular intervals, and a sawing edge 52, 55 is fixed to each of the front and rear sides of each of the serrations. When the sawing device drives the circular saw blade 2 to rotate, the sawing edge 52 of the leading edge of the serration 51 (in the direction in which the circular saw blade rotates, the portion where the sawtooth first touches the workpiece) can be sawed by the sawing member. The saw blade 55 at the trailing edge of the serration 52 does not saw the workpiece. After a period of use, the saw blade 52 of the leading edge of the serration 51 is worn and unsuitable for use, the serration 51 The trailing edge saw blade 55 maintains a sharp, unworn shape. At this time, each of the curved saw blades 50 can be removed and turned 180. Reassembling on the saw blade body 40, the saw blade 55 at the trailing edge of the sawtooth 51 is turned into a forward state, and the saw blade 52 at the leading edge of the sawtooth 51 is turned to a rearward state, and the saw blade 55 can be sawed. Piece of work. This can further increase the service life of the curved saw blade 50. Thus, the two-way saw blades 52, 55 of the circular saw blade 2 can be sawed separately without using a sawing device having a positive and negative function.

Please refer to Figure 7. The aforementioned circular saw blade 2 having a two-way saw blade can be assembled for use on a sawing device (not shown) in which the driveable double saw blades are rotated in opposite directions. The other circular saw blade 3 has the same structure as the circular saw blade 2, and only the locking positions of the screws 60' and 60 are different. The two saw blades 2, 3 on the chainsaw device must be properly spaced to prevent the saw blades 52, 52' of the two circular saw blades 2, 3 from rubbing against each other, to avoid damage to the saw blades 52, 52', and to avoid sawing. The blades 52, 52' are overheated and softened, which affects the cutting accuracy. The ends of the screws 60, 60' on the circular saw blades 2, 3 protrude from the saw blade body 40, 40' by a length of 0.25 mm, and the convex ends of the screws 60, 60' and the other circular saw blades 3, 2 The saw blade bodies 40', 40 are in contact, so that the two circular saw blades 2, 3 maintain an optimum spacing (the distance between the saw blades 52, 52' of the two circular saw blades 2, 3 is 0.03 mm). Meanwhile, in order to prevent the screws 60, 60' of the two circular saw blades 2, 3 from touching each other, the distance between the screws 60, 60' on the two circular saw blades 2, 3 and the rotational axis of the two circular saw blades 2, 3 Not equal, but staggered up and down. The element indicated by reference numeral 50' in Figure 7 is a curved saw blade.

In summary, the circular saw blade of the replaceable saw blade provided by the present invention can replace the curved saw blade to make the saw blade on the circular saw blade a new shape, and can provide the function of sawing the work piece. As a result, consumable costs can be reduced and consumers can be reduced. The structure of the invention is used on a circular saw blade with a double-sided saw blade, and the life limit of the curved saw blade can be doubled, which is an ideal and practical design.

There are a variety of other embodiments of the present invention, and various modifications and changes can be made thereto in accordance with the present invention without departing from the spirit and scope of the invention. Changes and modifications are intended to be included within the scope of the appended claims. Industrial applicability

The circular saw blade of the replaceable saw blade provided by the invention can replace the curved saw blade to make the saw blade on the circular saw blade a new shape, and can provide the function of sawing the work piece. As a result, consumable costs can be reduced and consumers can be reduced. The structure of the invention is used on a circular saw blade with a two-way saw blade, and the life limit of the curved saw blade can be doubled, which is an ideal and practical design.

Claims

Claim

A circular saw blade for a replaceable saw blade, which is a circular saw blade for use in assembling a saw device, characterized in that the circular saw blade comprises: a saw blade body, at least two curved saw blades, And a plurality of screws; wherein

The outer circumference of each of the curved saw blades is provided with serrations, and each of the curved saw blades can be spliced into a complete ring shape; the inner edge of the curved saw blade is provided with at least one convex portion, and the convex portion can be made with the notch of the saw blade body One-to-one anastomosis; the inner edge of the curved saw blade is provided with a ring extending along the inner edge, the tab being engageable with the groove of the saw blade body; the wall surface of the tab is provided with a plurality of perforations The screw can penetrate the through hole of the tab and the screw hole of the saw blade body to lock the arc saw blade to the periphery of the saw blade body.

2 . The circular saw blade of the replaceable saw blade according to claim 1 , wherein a groove of the saw blade body is disposed on a circumferential end surface of the saw blade and defines a groove having two side wall surfaces; The two side wall surfaces of the groove are respectively provided with a plurality of screw holes and a plurality of perforations in a relative shape.

The circular saw blade of the replaceable saw blade according to claim 2, wherein the perforation aperture on a side wall surface of the groove of the saw blade body is a reamed hole; the reamed perforation can allow the The tapered head of the screw sinks.

The circular saw blade of the replaceable saw blade according to claim 1, wherein the curved saw blade is provided with protruding teeth arranged at an equiangular interval along the edge, and the front and rear sides of each saw tooth are fixed. Set a saw blade.

A circular saw blade for an exchangeable saw blade according to claim 4, wherein the end of the screw protrudes from the saw blade body by a length of 0.25 mm.